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images/image_rounded_corners

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/* $Id: image_rounded_corners.java,v 1.9 2014/01/30 14:05:25 rjs Exp $

 * Image with rounded corners:

 * Place an image with rounded corners

 *

 * Get the dimensions of an image and create a clipping path as a rectangle of

 * 0.5 of the width and height of the image and with rounded corners. Fit the

 * image into a box with the position and size of the clipping path.

 *

 * Required software: PDFlib/PDFlib+PDI/PPS 9

 * Required data: image file

 */

package com.pdflib.cookbook.pdflib.images;


import com.pdflib.pdflib;

import com.pdflib.PDFlibException;


public class image_rounded_corners

{

    public static void main (String argv[])

    {

        /* This is where the data files are. Adjust as necessary. */

        String searchpath = "../input";

        String outfile = "image_rounded_corners.pdf";

        String title = "Image with Rounded Corners";


        pdflib p = null;

        int exitcode = 0;

        String imagefile = "nesrin.jpg";

        int image;

        double width, height;   // width and height of the image

        int radius=50;          // radius of the circle describing a rounded corner

        int x=20, y=20;         // lower left position of the image


        try {

            p = new pdflib();


            p.set_option("searchpath={" + searchpath + "}");


            /* This means we must check return values of load_font() etc. */

            p.set_option("errorpolicy=return");


            if (p.begin_document(outfile, "") == -1)

                throw new Exception("Error: " + p.get_errmsg());


            p.set_info("Creator", "PDFlib Cookbook");

            p.set_info("Title", title + " $Revision: 1.9 $");


            /* Load image */

            image = p.load_image("auto", imagefile, "");

            if (image == -1)

                throw new Exception("Error: " + p.get_errmsg());


            /* Get the width and height of the image */

            width = p.info_image(image, "imagewidth", "");

            height = p.info_image(image, "imageheight", "");


            /* Start a page with the image dimensions */

            p.begin_page_ext(width, height, "");


            /* Save the current graphics state including the clipping path */

            p.save();


            /* Define a path as a rectangle of 0.5 of the original width and height

             * of the image and with rounded corners

             */

            width *= 0.5;

            height *= 0.5;


            p.moveto(x + radius, y);

            p.lineto(x + width - radius, y);

            p.arc(x + width - radius, y + radius, radius, 270, 360);

            p.lineto(x + width, y + height - radius );

            p.arc(x + width - radius, y + height - radius, radius, 0, 90);

            p.lineto(x + radius, y + height);

            p.arc(x + radius, y + height - radius, radius, 90, 180);

            p.lineto(x , y + radius);

            p.arc(x + radius, y + radius, radius, 180, 270);


            /* Set clipping path to defined path */

            p.clip();


            /* Load image */

            image = p.load_image("auto", imagefile, "");


            /* Fit the image into a box with the size and start point (x,y) of the

             * clipping path. The image is placed in the center of the box using a

             * fit method of "meet" which will scale the image proportionally until

             * it completely covers the box */

            p.fit_image(image, x, y, "boxsize {" + width + " " + height +

                "} position center fitmethod=meet");


            /* Close image and restore original clipping (no clipping) */

            p.close_image(image);

            p.restore();


            p.end_page_ext("");

            p.end_document("");


        } catch (PDFlibException e) {

            System.err.print("PDFlib exception occurred:\n");

            System.err.print("[" + e.get_errnum() + "] " + e.get_apiname() +

                ": " + e.get_errmsg() + "\n");

            exitcode = 1;

        } catch (Exception e) {

            System.err.println(e.getMessage());

            exitcode = 1;

        } finally {

            if (p != null) {

                p.delete();

            }

            System.exit(exitcode);

        }

    }

}